Sk-s10 bluetooth wireless mini speaker with tf,mic,build in mp3player expanded bxs( bases expansion system) drives a fuller, richer low-end response.- larger 45mm driver delivers precise highs for superb sound. Support a2dp,avrcp ,handfree profile.- compatible with bluetooth phones, mp3/mp4/cd/pc/mac/psp, etc.- wireless mini speaker with microphone and build in mp3 player- play music from bluetooth devices including mobile phones, ipad and android tablets, mp3 players, pc or mac laptops- supports tf card (micro sd card) for playback from built-in mp3 player- built-in lithium battery 520mah, charging via usb- 3w speaker.support a2dp, avrcp, headset, hands free profile feature:1. Bluetooth synchronous broadcasting function2. Compatible with bluetooth phones, mp3/mp4/cd/pc/mac/psp, etc.3. Built-in lithium battery.4. Support tf card(mini micro card)5. Support a2dp,avrcp,headset,handfree profile 6. Support hands free with noise cancellation and echo suppression